Tool-holding attachment.



PATENTED MAY 10, 1904.

T. J. GORMAN. TOOL HOLDING ATTACHMENT.

APPLICATION FILED APR. 27. 1903.

NO MODEL.

III/IL I.'I/III/III],IIIllIIlIIIIIII/IIIIII/I/IIIIIIIIIIIIIIII/I I IIJVIIIII/II/lIl/IIIIIIIII UNITED STATES Patented May 10, 1904.

PATENT OEEIcE.

THOMAS J. GORMAN, OF SAN FRANCISCO, CALIFORNIA.

TOOL-HOLDING ATTACHMENT.

SPECIFICATION forming part of Letters Patent N0. 759,434, dated May 10, 1904.

Applieation filed April 27,1903- $erial No. 154,541. tNo model.)

T at whom it may concern.-

Be it known that I, THOMAS J. GroRMAN, a citizen of the United States, residing in the city and county of San Francisco, State of California, have invented certain new and useful Improvements in Tool-Holding Attachments; and I do hereby declare the following to be a full, clear, and exact description of the same.

The present invention relates to certain improvements in that style of tool-holding device commonly known as the old man, which is used for holding a ratchet-drill in place during the operation of drilling holes in sheet metal, the object of the invention being to dispense with the bolt means heretofore employed for uniting the device to its work and in lieu thereof to provide a simple and effective attachment whereby the device may be quickly attached to and held in position for work.

To comprehend the invention, reference should be had to the accompanying sheet of drawings, wherein- Figure 1 is a side view in elevation disclosing the tool-holder secured to a sheet of metal and a ratchet-drill held in place. Fig. 2 is a cross-sectional plan View taken on line m, Fig. 1 of the drawings. Fig. 3 is a view disclosing the manner of locking the tool-holder when used adjacent to a partition-plate; and

. Fig. 4 is a detail cross-sectional view taken on line y 3 Fig. 2 of the drawings, viewed in the direction of the arrow.

The present invention is more especially designed for use in connection with the drilling of rivet-holes in the floors, side, and compartment walls of war vessels, although the same is equally as well adapted for use in connection with the drilling of holes generally in metal plates.

In the drawings the numeral 1 is used to designate the foot of the old man or tool-holder, and 2 the stem upwardly springing therefrom. Upon this stem is adjustably secured the arm 3, which holds the drill 4: in place. In the present case an ordinary ratchet-drill is illustrated, although a pneumatic or other suitably-operated tool may be employed in the place of the ratchet-drill. The stem 2 springs from the heel portion 5 of the foot 1, the toe 6 being a distance therefrom sufficient to give a long bearing for the foot. The forward face of the heel portion 5 is cut or beveled, so as to present an inclined face 7 In the under face of the heel 5 is formed a screw-threaded socket 8, into which screws the threaded lock-stud 9. The projecting end 10 of this stud is slightly curved, so that the same will grasp or bind against the under face of the plate 11, through the hole 12 of which it is inserted.

To secure stability and insure horizontal alinement of the foot 1, the adjusting-screws 13 13 are employed. These screws work through screw-threaded vertical holes 14: 14

in the heel of the foot at each side of the stem 2. By adjusting the screws inward or outward after the device has been attached to the plate 11 perfect adjustment of the foot is obtained.

Where the holder is to be used adjacent to a partition-plate 15, it is desirable that the device be attached as close to said plate as possible. To permit of this, the stud 9 is removed from its socket 8 and screwed into one of the vertical openings or holes 14: 14. By this means the foot 1 is attached only a slight dis: tance from the face of the partition-plate 15,

Fig. 3 of thedrawings.

In attaching the holder to the plate 11 the same is first tilted at an angle to the face of the plate, so that the beveled or inclined face 7 of the heel is presented thereto. When in this position, the forwardly-curved end 10 of the lock-stud 9 is slipped through the opening or hole 12 of the plate 11. After the lockstud has been inserted the holder is thrown into position, so that the foot 1 rests firmly upon the upper face of the plate, proper adjustment or positioning being secured through the medium of the adjusting-screws. When thus positioned, the lower curved end of the lock-stud will bear firmly against the under face of the plate 11, the holder being thus held in locked position.

To fit holes of varying diameter, it is only required that lock-studs having different-diameter engaging ends be employed, either being substituted for the other. This is permitted, inasmuch as the lock-stud is remov- I0 ably secured within the screw-threaded socket 'stud and the regulating-screw 15'. "thusclamped to the plate, the holding device "is held against movement during the working in the heel 5 of the foot. The holder or old man may thus be quickly attached to and disconnected from the plate. Inasmuch as the locking means forms a portion of the holder, the time heretofore wasted in looking after the securing-bolt or fastening means is saved.

Through the forward portion of the heel 5 works the regulating-screw 15, which bears against the upper surface of the plate to which the device is attached. As this regulatingscrew is screwed against the plate it serves to force the curved end or head of the lockstud against the under face of the plate, so that the plate is clamped between the lock- Being of the drilling-tool.

To release the device fromthe plate 11, it is only required to loosen or screw up the regulating-screw, so asto permit of the holdingtool being tilted forward to place the curved end or head of the lock-stud in line with the plate-hole '12.

Having thus described the invention, what is claimed as new, and desired to be protected by Letters Patent, is

'1. In a device of the described character,

the combination with the heel thereof, an 111- clined or beveled face to the heel, a regulat-v ing device working through the beveled portion of the heel, a lock-stud projecting from the under face thereof and adjusting-screws working through the said heel at opposite sides thereof.

2. In a device of the described character, the combination with the heel thereof having an inclined or beveled face, of a regulating device working through said beveled portion of the heel, a lock-stud removably secured to the heel, said lock-stud having an outwardlycurved end or head.

3. In a device of the described character, the combination with the heel thereof having an inclined or beveled face, of a lock-stud secured thereto, adjusting means, and a regulating device working through the heel.

4. In a device of the described character, the combination with the heel thereof having an inclined or beveled face, of a lock-stud projecting from the under face of the heel, the projection of said stud being outwardly curved, and a regulatingscrew working through the beveled portion of the heel.

h 11gl witness whereof I have hereunto setmy THOMAS J. GORMAN.

VVitnesses'z N. A. AoKER, D. B. RICHARDS. 

